4x^3-7x^2+x+x^3 like terms
4x^3−7x^2+x+x^3=4x^3+−7x^2+x+x^3Combine Like Terms:=4x^3+−7x^2+x+x^3=(4x^3+x^3)+(−7x^2)+(x)=5x^3−7x^2+x
